Can-body forming and soldering machine.



L. C. SHARP.

CAN BODY FORMING AND SOLDYERING MACHINE. APPLICATION FILED AUG. 28. I908. RENEWED JULY 28.1915.

Patented Sept. 14, 1915.

13 SHEETSSHEE'I I.

L158A54o W MTORIMEW L. C. SHARP. CAN BODY FORMING AND SOLDERING MACHINE. APPUCATION FILED AUG.28. 190s. RENEWED JULY 28,1915- 0 Patented. Sept. 14, 1915.

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ATTORNEY L. C. SHARP. Z CAN BODY FORMING AND SOLDERING MACHINE. APPLlCATION FILED AUG.28. 1908- RENEWED JULY 28. I915.

1 9 1 A540 Patented Sept. 14, 1915.

13 SHEETS-SHEET 3.

WITNESSES v I ATTOR/VE V L. C. SHARP. CAN BODY FORMING AND SOLDERING MACHINE.

APPLICATION FILED AUG.28. 1908 RENEWED JULY 28.1915- Patented Sept. 14, 1915.

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WITNESSES L. C. SHARP.

,CAN BODY FORMING AND SOLDERING MACHINE.

APPLICATION FILED AUG.28.1908. RENEWED JULY 28.1915.

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ATTORNEY l3 SHEETS- PatentedSept. 14, 1915. I

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I L. c. SHARP.

' CAN BODY FORMING AND S OLDERING MACHINE. APPLICATION FILED 'AUG.28. I908. RENEWED JULY 28.1915.

Lw fimh E v Patented Sept. 14, 1915.

13 SHEETSSHEE1 6.

h 4? i 119 1m HGOQ ' ATTORNEY L. C. SHARP.

CAN BODY FORMING AND SOLDERING MACHINE.

APPLICATION FILED AUG. 28. 1908. RENEWED JULY 28.1915.

Patented Sept. 14 1915.

I 3 S H E ETS I SHEET 7.

y u v m ATTORNEY L. c. SHARP. CAN BODY FORMING AND SOLDIERING MACHINE.

APPLICATION FILED AUG.28. I908. RENEWED JULY 28,1915.

Patented Sept. 14, 1915.

I3 SHEETSSHEEI 8.

' ATTORNEY L. c. SHARP.

CAN BODY FORMING AND SOLDERING MACHINE.

APPLICATIION FILED AUG-28.1908. RENEWED JULY 28.1915.

ATTORNEYS 1s SHEETSSHEE19.

Patented Sept. 14,

BY /m( L. C. SHARP.

CAN BODY FORMING AND SOLDERING MACHINE.

APPLICATION FILED AUG.28.1908- RENEWED JULY 28,1915.

4 Patented Sept. 14, 1915.

13 SHEETS-SHEET 10.

ATTORNEY v L. c. SHARP. CAN BODY FORMING AND SOLDERING MACHINE. APPLICATION FILED AUG.2B. I908- RENEWED JULY 28' I915.

Patented Sept. 14, 1915.

I3 SHEETSSHEET ll ATTORNEY L. C. SHARP.

CAN BODY FORMING AND SOLDERING MACHINE.

NTORIVEV L. C. SHARP.

CAN BODY FORMING AND SOLDERING MACHINE.

APPLICATION FILED AUG-28.1908- RENEWED JULY 28.1915.

LlAM. PatentedSept. 14, 1915.

I3 SHEETS-SHEE1 I3.

222 llmlifi Fl a. 2

LEE 0. SHARP, OF PLATTSMOUTH,NE]BRASKA, ASSIGNOR TO BREIVIER & BRUCAN, OF

BRUNSWICK, GERMANY.

CAN-BODY FORMING- AND SOLDERI'NG MACHINE.

Specification of Letters Patent.

Patented Sept. 1d, 1915.

Application filed August 28, 1908, Serial No. 450,60 Renewed I'uly 28, 1915. Serial No. 42,452.

To all whom it may concern:

Be it known that I, LEE G. SHARP, of Plattsmouth, county of Cass, State of Nebraska, have invented certain new and useful Improvements in Can-Body Forming and Soldering Machines, of which the following is a full, clear, and exact specification, such as will enable others skilled in the art to which it appertains to make and use the same. I

My invention relates to a machine for automatically bending blank tin plates into the form of a can body with its meeting edges lapped to produce a lapped seamand for soldering this seam.

The invention resides in certain novel features of construction and combinations of parts all of which will be fully set forth hereinafter and particularly pointed out in the claims.

Reference 'is had to'the accompanying drawings which illustrate as an example, one manner in which the invention may be practically embodied, in which drawings,

Figure 1 is a'right hand side elevation of the machine; Fig. 2 is an elevational view looking toward the left hand side of the machine with the upper part thereof in vertical longitudinal section; Fig. 3 is a transverse vertical section taken through the magazine containing the-blank metal plates and showing the manner of mounting the magazine on the'fram'e and the devices for feeding the plate forwardpFig. 4-is a plan view of the magazine and of the de vices for advancing the tinplate from the same through the successive operations thereon up to the folding of the plate to form the can'body; Fig. 5 is a central longitudinal vertical section of the parts shown in Fig. 4 taken on the line 55 of such figure; Fig. 6is a longitudinal sectional view of one of the two sets. of dogs and the slid-. ing bar which carries them. Fig. 7 is an enlarged detail section on the line 77 of Fig. 3 illust ating one of the spring pressed fingers which hold the blank tin at the rear or discharge side of the magazine; Fig. 8 is a sectional plan on the line 8-8 of Fig. 3;

Fig. 9 is aside elevation of the devices for feeding and supplying the solder in the form of a foil with an adhesive flux; Fig. 10 is a plan view of the same; Fig. 11 is a vertical transverse section on the line 1111 of Fig. 10; Fig. 12 is a front elevation of the solder applying devices with a fragment of the frame in longitudinal section; Fig. 13 is an elevational view of one of the devices for crimping the edges of the blank preparatory to bending the same, this view showing part of the frame of the machine in longitudinal section; Fig. 14 is a transverse section of the same parts on the line 1414 of Figs. 1 and 13; Fig. 15 is a side elevation of the devices for bending or folding the blank tin around a horn to form the can body; Fig. 16 is a transverse section of such devices on the line 16-16 of Figs. 1 and 15; Fig. 17 is a longitudinal section of'the blank bending devices on the line 17-17 of Fig. 16; Fig. 18 is a longitudinal sectional elevation of the devices for advancing the can body from the bending devices shown in Figs. 15, 16 and 17 to the turret on which latter the solder is melted to complete the seaming operation. Fig. 19 is a section on view of the parts shown in Figs. 18 and 19; Fig. 21 is a front end elevation of said parts; Fig. 22 is a plan view of the turret with parts broken away to-show the means for. imparting a step by step rotary motion to the turret; Fig. 23 is an enlarged detail showing the devices-for pinching the lapped edges of the can blank together preparatory inafter described. The box casting 32 has a table 33 at its upper end and at'the rear edge of this table is erected an inverted U- shaped bridge 34. In this table 33 are arranged two sleeves 35 (see Figs. 2 and 5)' vertically disposed-and adapted to accommodate threaded pins 36 having jam nuts 37 at their lower ends. On the'upper ends of the sleeves 35 sprocket wheels 38 are arranged, these sprocket wheels being interiorly threaded to act as nuts on the pins 36 and connected to turn in unison by a chain 39. The pins 36 have their upper ends non-rotatably engaged in a horizontal longitudinally'disposed box-like frame member 40 which is supported by said pins and which forms a track for the inverted U- the line 19-19 of Fig. 18; Fig. 20 is a plan shaped slide 41 (see Figs. 2 and 3). By turning the sprockets 38 the pins 36-may be adjusted vertically to adjust the position of the box 40 and said pins, therefore, perform the function not only of supporting but adjusting the box or slideway 40. The slide 41 supports the devices for advancing the lug 44 and bolts 45.

blank tin and such slide is, in operation, given a regular back and forth movement all of which will be fully described hereinafter.

.The magazine which contains the blank tin in the form of flat plates of the requisite size is of open or skeleton-like construction andis supported by two brackets 42 adjustably fastened on the table 33 and rising;- therefrom. These brackets carry vertical longitudinally disposed side plates or walls 43 adjustably sustained through a slotted The side walls 43 have inwardly projecting ledges 46 which form the bottom of the magazine and against the inner sides of said walls 43 side plates 47 are adjustably fastened by bolts 48 (see Figs. 3 and 4). These side'plates 47 have at their front ends inwardly turned portions 49 which form stops to limit the forward motion of the pile of blanks and which are connected by a cross member or bridge 50 bolted to the front sides of said inwardly projecting portions. As shown in Fig.4, the parts 49 are shouldered at 49 and this is forthe purpose of accommodating various sizes and shapes of blanks. The specific form ofthese shoulders will not be described in detail since they will necessarily vary according to the sort of blanks to be handled.

' stitute the stationary parts of the magazine which it will be seen from Figs. 1 and 2 is erected at the extreme front end of the table- 33.

53 is the prime mover shaft of the machine and the same is mounted transversel at the rear side of the box 32 in bearings 54 attached thereto. On the shaft 53 is an eccentric 55 whichoperates a rod 56. This rod is formed in sections with an adjusting means 57 connecting them and said rod has intermediate its ends a-loop 58 loosely engaged with a pin 59 on a lever 60. This lever is intermediately fulcrumed at 6'1 and is given a regular vibratory motion by the action of the parts 55 and 56. The loop 58 of the arm 56 restsby gravity on the pin 59 and should any of the parts of the machine become clogged or-the operation be, otherwise dearranged the attendant at the front end of the, machine may ift the loop out of engagement with the pin, thus stopping the motion of lever 60 and the connected parts. 62 indicates two oppositely disposed spring pressed pins normally spaced apart a distance less than the thickness of the arm 56, but capable of being forced farther apart so that said arm may be moved between them when disengaged from the lever 60 and by which the arm may be releasably held in raised position as long as desired.

The lever 60 projects upward through an opening in the table 33 into the hollow box or slideway 40 and is formed at its upper end with an eye 63 receiving a pin and friction roller 64 which moves freely through slots 65 in the vertical walls of the slideway 40. This pin 64 has its end portions engaged in vertical slots 66 in the slide 41 so that vibration of the lever 60 will not affect the sli'deway 40 and will impart a regular back and forth motion to the slide 41. I This slide 41 as shown best in Fig. 4 has two pairs of transverse arms 67 adjustably fastened thereto by bolts 68. The bolts are covered racks 70 in each of which three dogs 71 are mounted. These racks 70 and the cap 69 have their upper surfaces in the same lane and level with the upper surfaces 0 the ledges 46 (see Fig. 3) so that the blank tin may rest uniformly on all of these parts. As shown best in Fig. 6, the dogs 71 are pivoted in cavities in the racks and are pressed by up springs 72. The dogs 71 directly under the magazine are provided with steel plates 73 furnishing knife edges which insure engaging the bottommost plate of the pile of blanks, but prevent the dogs from engaging more than one sheet at a time, the knife edges formed by such plates projecting above the surface of the dogs for a distance equal only to the thickness of one of the blank plates. For further insuring the movement of only one plate at a time out of the magazine two stop bars 74 are provided. These stop bars, as shown best in Figs. 3, 7 and 8, are each mounted in a vertically disposed undercut. carrier 75, which carriers are adjustably mounted by screws or other fastenings 76 on the inturned portions 49 of the walls 47 of the magazine. The stop bars Upon the motion of the lever 60, therefore,

meat

the slide 41 is given a regular back and forth motion which is transmitted by the arms 67 to the racks 7 0 and the dogs 71 of the racks engage the blanks and give them progressive step by step motion rearward in the machine, the right hand dogs in 1- 1g. 4 moving the plate out of the magazine to the solderapplying station, the middle dogs moving the blank from the solder applying station to the edge forming or crimping station and the left hand dogs in Fig. 4 moving the blanks from the edge forming to the blank bending station, such operations taking place intermittently to allow the necessary work to be performed on the blank tin as will hereinafter fully appear.

The solder is applied to one edge of the blank before it is rolled up to form the can body. In applying the solder it is in the form of a foil previously prepared and coated on one side with a sticky or adhesive fiux which serves the double purpose of cansing the solder to adhere to the tin and of fiuxing the solder when it is sufficiently melted by a flame provided for that purpose in a manner to be hereinafter described. The solder applying device is mounted at the right hand side of the frame on the table 33 and is driven by a rocker arm 81 mounted fast on the projecting end of the shaft 61 (see Figs. 1 and 9 to 12). The table 33 carries a vertical bracket 82which in turn sustains a box 83, the upper surface of which is level with the plane in which the blank tin'travels so that the right hand edge of the blank may move over it as shown in Figs. 9, 11' and 12 where a indicates the blank. The bracket 82 also carries an arm 84 on which is mounted a shaft 85 carrying a roll of solder foil indicated at b. On said arm 84 is a pan 85 carrying the adhesive flux and into this a roll 86 is dipped.- Above the roll 86 are two other rolls 87 and 88 and the solder foil passes downbetween he rolls 86 and 87 and up over the roll 8 thence along the upper surface of the box 83.

89 indicates a scraper which works on the surface of the roll 86 to remove the superfluous flux. The solder in passing over the roll 86 has the flux applied to one surface thereof and this surface is that on the under side next to the blank so that when the solder is cut into the narrow strip and pressed into the blank it adheres thereto. From the rollers 86, 87 and 88 the solder passes over a roller 90 arranged in the box 83 and above which is a milled wheel 91. The shafts of the roller 90 and wheel 91 carry meshing spur gears 92 so that the parts 90 and 91 turn in unison and necessary pressure is exerted on the top of the foil by the wheel 91 through the action of adjusting screws 93 engaging the boxes 94 in which the shaft of the wheel 91 is mounted. Outside of the box at the front end of the shaft 90 of the roll 90 is' arranged a ratchet wheel 95 which is fastened to said shaft and adapted to be acted on by a pawl 96. This pawl is pivoted on an arm 97 which in turn is mounted by a pivot 98 to an arm 99 mounted to swing around the center of the shaft 90. The pawl 96 is pressed toward the ratchet wheel 95 by a spring 100 carried on the arm 97 and said arm 97 itself is pressed toward the ratchet by a spring 101 connected by an adustment screw 102 with the saidarm 99. On the upward motion of the arm 99 the pawl 96 normally imparts a rotative motion to the ratchet 95 and the rolls 90 and 91 and on the downward motion of the arm 99 the pawl slips over the ratchet wheel to recover its engagement therewith. The arm .99 is connected by a link 103 with a vertically reciprocal rod 104 guided in a bracket 84 and connected to one end of the rocker arm 81 before described, by which the rod 104 is given a regular reciprocal motion.

The arm 97 is elbow-shaped and its free end terminates in a toe 105. This toe is adapted to coact with a toe 106 on an elbow lever 107 which is fulcrumed on the framing of the solder applying device by the rock shaft 108 (see Fig. 9). At the opposite side of the soldering device (see Fig. 10) is an arm 107 similar to the arm 107 except that the lower limb thereof is omitted. This arm 107 is mounted on the shaft 108 and the two arms 107 and 107 are connected at their free ends by a cross bar 109. This crossbar engages two pins 110 (see Fig. 12) which are vertically movable and guided on the framing of the solder applying device by boxes 111. The pins 110 are joined to a U- shaped carrier or mount 112 which sustains a number, preferably three, wheels 114. These wheels 114 operate over corresponding cavities 115 in the top of the box 83 and are adapted to have the plate (indicated at a) run under them, lifting the mount 112 and rocking the lever 107.

116 indicates a spring (see Fig. 9) which presses against the arm 107 tending to move downward the wheels 114 and mount 112, this spring being compressed by the motion of the lever 107 when the plate (a) passes under the rollers or wheels 114. As the wheels 114 are lifted by the movement of the plate under them they cause the lever 107 to swing out of engagement with the lever 97 and the'spring 101 then throws the lever 97 and the pawl 96 toward the ratchet wheel 95, engaging the pawl with the ratchet. At

this time the lever 99 is moving upward and the roll 90 is rotated to feed the solder foil. If it should happen that no plate is in position to receive its solder the wheels 114 will retain their lower positions in the cavities 115 and the spring 115 will then act to throw the lever 107 against the lever 97 and move the same to disengage the pawl 96 from the ratchet 95. When this takes place the upward motion of the arm 99 w1ll be idle and no solder will be fed. In this way waste of solder is prevented.

To the end of the rocker 81 opposite the end to which the rod 104 is connected is joined a rod 117, this rod-having an extension 118 pivoted thereto and such extension being articulated at its upper end to a lever 119 fastened to a shaft 120 mounted to rock in the framing of the solder applying de-. vice. The shaft 120 carries two arms 121 and these are pivotally joined to forks 122 attached to a knife plate 123. The knife plate 123 is vertically guided in the frame of the solder applying device and has a spring pressed edge 124 adapted to stroke pasta stationary edge 125 and sever a narrow strip of solder which is represented at b in Fig. 11. The continued downward motion of the knife carries this strip of solder against the face of the blank a and the spring pressed edge of the knife yieldingly' but firmly presses the solder against the blank causing it to adhere. After this the knife blade 123 returns to its raised position.

123 indicates a stationary stop plate located just outward frbm the knife 123 to strip the main body of the solder from the blade and prevent the blade lifting this solder with it. The plate is then moved ahead and a second plate'advanced to the solder applying position whereupon the arm again moves upward repeating the operation. It will be observed that the motion of the arms 99 and 119' is not simultaneous owing to the connection of said arms to the opposite ends of the rocker 81, the arm 99 moving upward to advance the foil while the blade 123 is inactive; and then on the downward movement of the arm 9.9 the arm 119-moves upward to force the blade 123' down and sever and impress the strip of solder on the blank.

I have so far described'the magazine in which the blank plates are stored, the device for progressively feeding the blanks and the means for applying the solder to one edge of each plate. It is next necessary in the formation of a lap seam can body to slightly crimp the edges of the tin so that they will be curved and will lie tightly together when the blank is bent facilitating the formation of a secure seam and avoiding the defect which would otherwise follow; to wit, the edges of the rolled blank standing at an angle .to each other and at tangents to the hornaround which the blank is rolled to form the can body. The devices for so crimping or shaping the edges of the blank will now be described, reference being had especially to Figs. 1, 2, 13 and 14.

In the before described bridge 34 are arranged two opposed holders 126. These accordance with the form of the dies.

are adjustably held each of them by a number, preferably three, stud bolts 127 adjustable in the bridge 34 and they carry each 'of them a stationary die 128 and a movable die 129 the lower edge of the stationary die being arranged in the plane of the line'of travel of the blank tin. These parts 128 and- 129 are shaped or curved at their meeting surfaces so that when the tin is introduced between them and the dies pressed together it will be shaped at its edgesTliln e movable dies 129 are mounted on slides 130 which operate in slideways 131 on the carriers 126 and are each of them joined to links 132 extending-downward through the table 33 and connected to slides 133 mounted in boxes 134 suitably attached to the framing 32 of the machine (for instance see Fig. 14). These slides 133 are actuated by cams 135 on a shaft 136 mounted in the frame 32 and each slide has a spring 137 attached through the medium of arms 138 secured to the slides, which springs hold the anti-friction rollers at the lower'ends of the slides in contact with the cams 135. Said shaft 136 is driven from the shaft 53 by a spur gear 139 attached to said shaft and meshed with a gear 140 secured on the shaft 53 (see dotted lines in Fig. 1). The parts are so timed that as a can blank 'is advanced from the solder applying station to a position within the bridge 34 the cams 135 raise the movable dies 129 and clamp the edges of the blank between the two pairs of dies suitably crimping or forming the edges and immediately thereafter the movable dies 129 drop by the action of the springs 137, allowing the blank plate to be advanced for the next operation.

The operation immediately following that of crimping the edges of the blank as above described-consists in the act of bending the previously flat plate around a horn into cylindrical or other form and lapping the edges to form the seam. The devices for so acting on the blank are illustrated in Figs. 1, 2, 15, 16 and 17. The shaft 53 carries two cams 140 which work between opposing rollers 141 on slides 142. These slides have downward extensions 143 guided in boxes 144 attached to the frame 32 and upward extensions 145 guided in boxes 146 forming part of a minor frame 147 attached to the rear side of the main frame 32 just rearward of the position of the bridge 34. The slides 142 actuate cross heads 148 to the outer ends of which rods 149 are pivoted. These rods extend upward at each side ofthe machine and are articulated to folding wings 150 also pivoted to the minor frame 147 at the point 151 (see Fig. 16). These folding wings 150 as here shown are of the form of an arc of a circle blank is fully introduced beneath the born (adapted to the formation of a circular can body) and coaet with a cylindrical horn 152 fastened on a stud shaft 153 which shaft is secured in an inverted bracket 154 bolted to the underside of the bridge 34 (see Figs. 18. and 19). One of the cross heads 148 car-' ries, by means of a bracket 148*, a cam plate 155 which has a plain side running against a backing roll 156 mounted in the secondary frame 147 while the face of the cam plate has an incline 155 and a second incline .upper ends of said pins are fastened to a clamp block 164 located directly under the horn 152. When a can blank is advanced by the action of the left hand dogs 71in Fig.4 from the edge crimping device shown in Figs. 13 and 14 to a position under the horn 152,.the folding wings 150 are thrown down to a point below the horn and the clamping block 164 is also down at which time the cams 140 are disengaged from the uppermost rollers 141 and the surface 155 of the cam plate 155 lies below the roller 157 of the elbow lever 158. The operation of the parts is so timed that when the can 152 and above the clamp block 164 the cams 140 rotate against the upper rollers 141 and raise the wings 150 to the position shown in Fig. 16. In this connection it will be noted that the cams 140 rotating in the direction of the arrow in Fig. 17, first engage the elevated portions 140 with theup per rollers 141 and the wings 150 thereby receive their extreme upward motion pressingthe can blank very firmly against the horn. Instantly thereafter the extreme elevations 140 of the cams 140 disengage the upper .rollers 141 while the cams continue to rotate their main elevation 140 against 1 these rollers holding thecan blank around the horn but in comparatively loose enga ement therewith Simultaneously with he upward motion of the cross head 148 due .to the above described action of. the cams 140 the cam .plate'155 runs its surface 155 against the roller 157 and-rocks the elbow lever l58 so as to raise the clamping block 164, this clamping block supplementing the action of the wings l50infolding the blank and preventing'the blank from lying loose at the bottom of the horn which would result in an irregularly shaped can body. The additional upward movement of the cam plate 155 finally runs the surface 155 past the roller 157 and the cam plate is held in this position until the return of the cross head 148 due to the reversal of the action of the cams 140. The purpose of first tightly clamping the blank around the horn and subsequently relaxing this pressure slightly.

is to allow the blank after it has been rolled into shape with its edges lapped preparatory to forming the seam, to be moved out of engagement with the horn and onto the turret where the soldering or sweating operation is performed.

I shall now proceed to describe the devices for moving the can body from between the horn and the folding wings onto the turret immediately after the operation of the folding wings above described. For this purpose reference is had particularly to Figs. 2, 18, 19, 20 and 21. As shown in Figs. 2, 18, and 21 the bridge 34 has two arms 165 fastened to its forward side, and projecting downward to the level of the cap 69 over 'which the blank plates move, these arms having forward extensions 166 which project to a point adjacent to the rear wall of the magazine directly over the racks which carry the feed dogs 71. Pivoted to the outer side of each of said extensions 166 are stops 167 pressed down by springs 168. These stops are adapted to have the blank plate run under them, the stops yielding upward to permit the rearward movement of the dogs but prevent the return movement of the plates since the springs 168 instantly push the stops down, back of the blank plates as such plates pass the stops. The

forwardmost stops (right hand stops in- Fig. 18) serve to holdthe plates from retrograde movement while said plates are engaged with the solder applying device and the rearwardmost stops (left hand stops-{in Fig. 18) serve to hold the plates from retrograde movement during the action of the edge crimping devices. When the plates pass from messa e crimping devices into engagem'ent with the horn they are, instantly thereafter, engaged by the folding win s 150 and clamping block 164 and are he (1 by these devices until the fold is completed andjthen the wings 150 ,relaxtheir pressure in'the manner and for. the purpose hereinbefore explained. It is at this time that the devices for pushing the can body 06' the horn come into action. These "devices are actuated by a toothed sector 169 attached to a shaft 170 mounted in bearings 171 on the bridge 34. This shaft is given a regular rocking motion by an arm 172 to which is articulated a link 173 extending downward to a crank 17 4 on the shaft 53. The toothed sector 169 meshes with a rack 175 which reciprocates longitudinally of the machine 34. This rack has attached to its front end a downwardly extending bracket 177 to which five longitudinally disposed fingers 17 8 are adjustably fastened. These fingers aredisposed in circular arrangement and are designed to pass through five grooves 179 formed in the horn 152 as shown best r in Fig. 16. For. the purpose of better accommodating the fingers the wings 150 are provided with corresponding grooves 180 on their interior surfaces, also illustrated best in Fig. 16. At the time that the wings 150 move upward to fold the plate the fingers 178 are withdrawn forwardly ou t of the path of the wings and the instant that the raised portions .140 of the cams 140 clear the upper rollers 141 and the pressure of the wings 150 is relaxed, the sector 169 reverses its motion and moves the fingers 178 rearward, said fingers being thereupon entered into the grooves 179 and 180,. striking the forward edge of the can body'and sliding the same rearward off of the horn152 and into engagement with the turret, whichis at this time in position to receive the can body for the further operations tobe performed thereon as will now be described.

The foregoing description will, it will be recalled,'make clear the feeding of the blank from the magazine, the application of the solder foil, to the edge of the blank, the crimping of the edges of the blank, the folding of the blank to form the can body and the movement of the can body, yet to be soldered, from the horn and folding wings into engagement with the turret. On the turret the seam of the can is subjected to a flame which melts the solder and causes it to flow, hermetically sealing the seam and then to cooling devices which cool the solder and cause it to set after which the can is ejected from the turret and automatically moved into enga ement with the edge forming'devices whic perform the final operation as far as this machine is concerned.

The turret is mountedon the. column 31.

, and an open raceway 185 within-the annulus, such raceway having ratchet teeth 186 on its outer wall (see Fig. 22). The turret annulus is given an intermittent or step by step rotary motion by means of a slide 187 which carries a pawl 188 pressed by a spring 189 against the ratchet teeth, these parts lying in the chamber 185 which is provided for their accommodation. Projectin down from the slide 187 through the opening 184 is'a stud 190 to which is articulated a link 191 in turn articulated to a lever 192. This lever (see Fig. 1) is fulcrumed on' the colcan body holders.

umn 31 at 193 and has a slotted lower end 194 with which is adjustably connected a link 195, this link is actuated by an eccentric 196 on the shaft 53. As shown best in Fig. 22, the upper section 183 of the annulus is formed with radial grooves 197 and within these grooves are arranged keys 198 having corresponding engagement with grooves 199 (see Fig. 23), in the base of the The can body holders are mounted on top of the turret annulus and there is one for each of the grooves 107.

7 They are spaced equidistant around the annulus and each of the holders comprises a rigid outer or main part 200 within, which is a core comprising a yielding segment 20] and a web or rib 202. The cores of the turret holders are unattached to the main parts 200 so that the can bodies may be moved freely in one end and off the other of the holder and the turret is adapted to stop its motion with'a holder opposite the horn 152. To secure the core from such movement during the time that the can body is being moved the core is provided with a hook 203 (see Figs. 22 and 24). This hook is adapted to engage with a corresponding hook 204 fastened to the shaft of the horn 152. When the turret thus stops and engages the hook 2030f one of the bod-y holders with the hook 204 of the horn the-can body is moved off the horn onto the body 200 of the holder and around the segment 201, the hooks 203 and 204 preventing the core from moving. Simultaneously the finished can body is pressedby the oncoming can body out of the holder to another part of the machine as will hereinafter fully appear. This motion of the can body from the horn 152 onto the can body holder is brought about by the action of the rods 178 and appurtenant parts above described. The diameter of the holder is equal to the diameter of the finished can body, and since the bent blank, before it is inserted into the holder, is slightly larger in diameter than the finished can, the diameter of the blank is reduced as it is moved into the holder.

The main part 200 of the can body holder is open at the top as shown in Fig. 23 to expose the seam of the can body; and for the purpose of pressing the parts of the seam together during the heating or solder meltin operation I provide a dog plate 205 adapte to bear on top of the seam and coacting with a supporting rib 206 sustained by the web 200 of the core of the body holder. This dog plate 205, as shown best in=Fig. 22, is preferably formed with a serrated edge engaging the seam and it is mounted on a rock shaft 207 carried by the body of the holder which rock shaft has attached thereto an arm 208. Said arm carries at its free end a roller 209 and this roller runs against the cam track 210. The cam meaata below this gap a second cam 216 is arranged. This construction causes the arm 208 to be thrust up as soon as the body holder reaches its position opposite the horn, thus allowing the finished can body to be ejected and the oncoming can body to take its position in the holder without obstruction. As soon, however, as the turret resumes its motion the roller 209 runs ofl" of the cam 216 and reengages the'cam track 210 with the result that the clamp plate 205 is pressed down on the seam as indicated by dotted lines in Fig.

23 which position it retains until the turet makes a complete rotation and returns the finished can body to the ejecting position.

On the annulus 211 is-mounted a box 217, the same being formed with a partition 218 dividing it into two compartments -with which gas connection 219 and air connection 220 res ectively communicate. This box 217 is formed with a slot 221 in the wall of the gas compartment and a-slot 222 in the wall of the air compartment and'with these slots nipples 223 on a rin 224 are adapted successively to register. he ring is rotatably mounted around the box on the annulus 211 and as it rotates the nipples 223 successively communicate .with the gas and air compartments. Each nipple 223 carries a pipe 225 terminating in a sleeve 226 in which sleeves pipes 227 aretadjustable, the ,pipes having openings 228 by which they commu;

nicate with the pipes 225. The pipes 227 are provided at their lower ends with sleeves 229 carrying burner pipes 230 which are also adjustable longitudinally. and are provided with elongated openings 231 which admit of such adjustment without disturbing the communication between the two pipes. 233

indicates a bracket fastened to the turret annulus and rising from the same to connect with one of the tubes 225. In this way the ring 224 and its attachments are rotated. Of these burner pipes 230 there is one for each can body holder and they are arranged directly over the same so .that'when the nipples223 communicate with the gas compartment of the box 217 the'fiame from the burner pipes will lay on the seams melting the solder thereln andfinishing the seaming operation. As the rotation of the ring 224' burning pilot light which serves to ignite the gas each time that one of the ipples 223 registers with the gas feed orifice 22l. This pilot light I prefer tomount on the bridge 34. It is not shown in Fig. 1 to avoid confusion of the drawing. It may be mounted in any other suitable or convenient way. The can bodies, therefore, are moved from the folding wings and horn onto the body holders of the turret and the turret rotating with the can bodies first causes a flame to play on the seam melting the solder, after which air is blown over the solder to cool it and the finished can body is finally returned to the starting position opposite the horn 152. At this time a new can body is moved from the horn onto the body holder, the oncoming can body engaging the finished can body and moving the same off of the inner end of the body holder through one of the openings 214 in the stand 212 and allowing the finished can body to drop through a chute 231 in the hollow column as shown best in Fig. 2. This chute 231 has its lower end curved laterally and passes out through the side of the column at the rear end of the machine to carry the finished can bodies from the machines.

I The organized operation of the machine 4 may be traced as follows: A pile of blanks forming and bending stations of the machine, the blanks stopping momentarily at each station and being retained in such stations by the action of the spring pressed dogs 167 shown best in Fig. 18. At the solder applying station a strip of foil is severed and impressed upon the edge of the blank adhering thereto by reason of the sticky flux described. At the edge forming station the edges of the blank are crimped so as to cause them to lie snugly at the seam; and at the bending station the previously flat blank is rolled up around the horn in circular or other form as may be desired. The intermittent action of theturret causes it to stop each time with one of the body holders opposite the horn 152 and at this time the rods 178 move rearward engaging the body on the horn and sliding the same 0d into the holder on the turret. The turret then resumes its motion and the clamp plate 205 engages the seam. As the rotation of the turret continues, a flame is first played on the seam to melt the solder and then a blast of air is blown to cool and set the solder so that when the turret makes a complete revo lution the finished can body is again opposite the horn 152 in the body holder. At 

